Fossils from Mulde, Gotland. 153 



? Cythere sxthqnndrata^ Jones. 



? Ci/there suhf/uailrafit, Jones, 18S7, Ann. & Mag. Nnt. Hist. ser. 6, 

 vol. xix. p. I'Jl, pi. vii. fig-*. (5 a, b, Sc 14 a, 6. 



This species is represented from Gotland only by a single 

 valve. It has been recorded from tiie Wcnlock Series of 

 Shrtipshire. 



Silurian ; Mulde, Gotland, 



TULIPSURA, Jones & IIoU [1869]. 



Tklipsura plicata, var. um'punctata, Jone.^. 



niipsura plictita,\o.r. wiipumtnta, Jones, 1887, Ann. & Mag. Xat. Hist. 

 8er. 5, vol. xi.v. p. 4U3, pi. xii. tigs. 11 & 12. 



A single example of this variety was found at Mulde. 

 Silurian ; Mulde, Gotland. 



Tklipsura v-scripta, Jones & iloll, var. discreta, Jones. 



Thiipsura I'-scripta, J, & II., var. discreta, Jones, 1887, Silur. Ostrac. 

 Gotliland, p. () ; Jones, 1888, Ann. & Mag. Nat. IIi.«t. ser. 0, vol. i. 

 p. 404, pi. xxii. figs, 'd a-c, 10. 



Good typical specimens occur in our washings from Mulde. 

 Silurian; ^luldc, Gotland. Very common. 



iEcHMiXA, Jones & Iloll [1869]. 

 jEchmina bovina, Jones. 



uEchmina hnviua, Jones, 1887, Ann. & Mag. Nat. Hist. ser. 5, vol, xix. 

 p. 412, pi. xiii. fig. 6; Jones, 1888, Ann. & Mag. Nat. Hist. ser. 6, 

 vol. i. p. 409, pi. xxii. fig. 8. 



Five very perfect specimens, showini^ the delicate toothed 

 margin, were found in our material. It has occurred before 

 in the ^Venloek Shales of this country and also at Frojel in 

 Gotland. 



Silurian ; Mulde, Gotland. 



jEchmina bovina, Jones, var. punctata^ Krause. 



jEchtnina hoviua, Jones, var. punctata, Krause, 1892, Zeitschr. deutsch. 

 geol. Gesellscb. vol. xliv. p. 397, pi. xxii. fig. 18. 



An example of this beautiful little variety occurred at 

 Mulde. The spike in our specimen is rather longer than that 

 shown in Krause's figure. Krause records this variety from 

 tlie ** Graptolithcn-Gestein " in the Silurian Drift of Mark 

 Brandenburg in N. Germany, 



Silurian j Mulde, Gotland. 



